EP3555004B1 - Mischung zur behandlung von mit quecksilber verschmutztem wasser, vorrichtung zur behandlung von mit quecksilber verschmutztem wasser mit solch einer mischung und verfahren zur behandlung von mit quecksilber verschmutztem wasser mittels solch einer vorrichtung - Google Patents

Mischung zur behandlung von mit quecksilber verschmutztem wasser, vorrichtung zur behandlung von mit quecksilber verschmutztem wasser mit solch einer mischung und verfahren zur behandlung von mit quecksilber verschmutztem wasser mittels solch einer vorrichtung Download PDF

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Publication number
EP3555004B1
EP3555004B1 EP17821987.9A EP17821987A EP3555004B1 EP 3555004 B1 EP3555004 B1 EP 3555004B1 EP 17821987 A EP17821987 A EP 17821987A EP 3555004 B1 EP3555004 B1 EP 3555004B1
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Prior art keywords
iron
water
mercury
mixture
filtration
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EP17821987.9A
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English (en)
French (fr)
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EP3555004A1 (de
Inventor
Boris DEVIC-BASAGET
Amandine ROMANO
Jean-Yves RICHARD
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SARPI Remediation France SAS
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Suez RR IWS Remediation France SAS
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
    • B01J20/0229—Compounds of Fe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0262—Compounds of O, S, Se, Te
    • B01J20/0266—Compounds of S
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • B01J20/3236—Inorganic material layers containing metal, other than zeolites, e.g. oxides, hydroxides, sulphides or salts
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/70—Treatment of water, waste water, or sewage by reduction
    • C02F1/705—Reduction by metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42—Materials comprising a mixture of inorganic materials
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds

Definitions

  • the present application relates to a mixture for treating water polluted with mercury.
  • It also relates to a device for treating water polluted with mercury using such a mixture.
  • It also relates to a method for treating water polluted with mercury by means of such a device.
  • a “water” is understood here in the broad sense, any industrial effluent, any ground water, canal, river, river, torrent, lake, even sea, ocean etc., natural or artificial.
  • a reduction step which includes a step of adding a reducing agent to the water polluted with dissolved ionic mercury or ionic elemental mercury, finely divided or colloidal, which causes the mercury to precipitate.
  • An extraction step in which the mercury is extracted either by filtration or by distillation.
  • Filter media come in various forms ranging from simple physical filtration with the use of sand ( CN102372377 for example) or activated carbon ( US6165366 ) to distillation, which consists of bubbling an inert gas in water to volatilize the mercury and then treating the mercury vapours.
  • water generally contains dissolved oxygen and other compounds (nitrates, sulphates, etc.) capable of oxidizing iron.
  • oxidation Fe(0) to Fe(II), or Fe(II) to Fe(III)
  • caking fragments of iron between them and/or a formation of precipitates of iron oxides and hydroxides occurs leading, in both cases, to a rapid clogging of the iron.
  • US2007/104949 relates for example to a granulate of broken glass comprising inclusions of an active substance.
  • At least one of the objectives of the present application is thus to resolve, at least in part, the aforementioned drawbacks, while also leading to other advantages.
  • a device for treating water polluted with mercury comprising: an enclosure containing a filtration reagent, an inlet of water to be treated in the enclosure upstream of the filtration reagent and a treated water outlet from the enclosure downstream of the filtration reagent, characterized in that the filtration reagent comprises a mixture of iron and a chemically inert granular support, that is to say a particle support chemically inert.
  • the chemically inert granular support comprises, for example, sand and/or siliceous gravel, beads of silica, of glass, or even possibly of certain plastic materials.
  • the chemically inert granular support comprises sand, in particular siliceous sand which is also particularly economical.
  • Such a device thus makes it possible to combine the reduction and the retention of mercury, in a single, simple, filtration device, while maintaining the effectiveness of the treatment.
  • Such a device thus allows the direct filtration of water polluted by mercury on a granular reagent.
  • the latter composed mainly of a mixture of iron and an inert granular support, for example and economically silica sand, allows both the reduction of the elementary forms of mercury and their trapping in the filter.
  • the mercury waters pass through the mixture, permeable, and the soluble forms of mercury are reduced and insolubilized on contact with the iron.
  • the reduced mercury remains trapped in the mixture which is gradually loaded with mercury until saturation and elimination, that is to say that it is simply possible to at least change the mixture when it is saturated.
  • the granular support makes it possible to ensure, when the proportion of iron is limited in the mixture, a distance between each grain of iron, limiting the direct contact iron/iron and consequently the clogging of the reagent.
  • the particle size of the granular support is chosen according to that of the iron used so as to respect the laws of non-segregation of iron by gravity and/or by backwashing.
  • a ratio N D15 / d85 - with D15 corresponding to the diameter passing from the granular support to 15% by mass and d85 to the diameter passing from iron to 85% by mass - is equal to or less than 11; even preferably, N is between approximately 3 and approximately 5.
  • N is between approximately 3 and approximately 5.
  • Iron is used for its reducing power.
  • This reducing agent can be either iron or an alloy containing iron such as steel (not stainless) or cast iron.
  • iron therefore designates here zero-valent iron, that is to say metallic iron, which has a strong reducing power, and not oxides, hydroxides, or oxyhydroxides of iron for example.
  • the iron is for example in the form of shot, and/or powder and/or shavings, and/or any other fractionated form allowing the penetration of water.
  • Each form develops a contact surface and a different permeability.
  • the type of iron is also chosen so as not to bring additional pollution downstream of the filtration reagent, in particular metallic pollution as could be done by zinc for example.
  • the mixture comprises between approximately 1% and approximately 50% by mass of iron, preferably between approximately 1% and approximately 25% by mass, or even more preferably between approximately 5% and approximately 20% by mass .
  • Such proportions make it possible to limit clogging of the mixture (the grains of iron, when oxidized, swell and weld together).
  • the life of the mixture depends in particular on the proportion of iron: to a certain extent, the more iron there is, the longer the lifetime for the same particle size.
  • the filtration reagent comprises at least one additive between 0% and approximately 5% by mass relative to the total mass of the filtration reagent, in order to optimize the treatment and/or to act on the scope of the treatment by case of mercury pollution, i.e. mixed pollution or co-pollution.
  • all the additives are preferably less than about 5% by weight.
  • the filtration reagent comprises at least approximately 95% by mass of the iron-granular support mixture.
  • the at least one additive comprises elemental sulfur, which allows the formation of mercuric sulphide (HgS) and thus makes it possible to chemically stabilize the reduced mercury.
  • HgS mercuric sulphide
  • the at least one additive comprises at least one specific ion exchange resin for capturing certain metallic pollution such as hexavalent chromium, a recurring pollutant of groundwater.
  • a resin is for example a resin whose functional group is of the quaternary ammonium type.
  • the at least one additive comprises activated carbon, to capture organic pollution.
  • the at least one additive is mixed into the mass of the iron-granular support mixture.
  • the at least one additive constitutes at least one independent layer, located upstream and/or downstream of the iron-granular support mixture.
  • the filtration reagent can comprise several layers configured to be successively traversed by the water to be treated.
  • the iron-granular support mixture treating the mercury is preferably preceded by a prefiltration layer having a permeability at least ten times greater than that of the iron-granular support mixture, that is to say having a greater particle size, for example having iron granules of 2 mm mixed in sand at 1-2 mm, and enriched in iron with respect to the iron-granular support mixture, so as to eliminate a maximum of oxygen, but with an iron content remaining below 50% by mass.
  • the iron content of this prefiltration layer is for example between about 20% and about 40% by mass.
  • This layer has the role, for example, of consuming most of the oxidants present in the water to be treated and therefore of protecting the iron-granular support mixture, which is dedicated to mercury.
  • This pre-filtration layer also reduces the risk of filter reagent clogging.
  • the filtration reagent possibly comprises, for example, a prefiltration layer upstream of at least the iron-granular support mixture, the prefiltration layer having a permeability at least ten times greater than that of the iron-support mixture granular and/or an iron content for example between about 20% and about 40% by mass.
  • a mercury-polluted water treatment mixture comprising iron and a chemically inert granular carrier; which comprises for example sand and/or siliceous gravel, beads of silica, of glass, or even possibly of certain plastic materials, preferably sand.
  • Such a mixture comprises for example all or part of the characteristics described previously, independently of the device.
  • such a mixture is advantageously used in a device as described above.
  • the method thus has advantages similar to those described in connection with the device.
  • the device mainly comprises an enclosure 1.
  • Such an enclosure, or tank typically has a generally cylindrical shape. It is generally made of stainless steel or high density polyethylene.
  • the enclosure often includes, for example, an access hatch allowing access to the enclosure and/or, for example, to fill and/or empty it with filtration reagent.
  • This is for example a tank with a capacity of a few cubic meters, for example from 1 m 3 to several cubic meters.
  • the device comprises an inlet 3 for water to be treated in the enclosure 1, for example in the form of a channel passing through a wall of the enclosure 1 on one side of the enclosure, and an outlet 4 for treated water outside the enclosure, also for example in the form of a channel passing through the wall of the enclosure 1 on another side of the enclosure.
  • outlet 4 is opposite the inlet 3 along an axis D of the enclosure which generally extends vertically.
  • the inlet 3 is here formed at the bottom of the enclosure 1 and the outlet 4 is formed at the top of the enclosure 1 so that the water enters at a base of the enclosure 1 then crosses it vertically up to at the exit 4, according to an ascending flow. According to another exemplary embodiment not shown, it could be otherwise so that the flow would then be downward.
  • Enclosure 1 is also here equipped with a grille 2.
  • the grid 2 is for example arranged between the inlet 3 and the outlet 4, here towards the base of the enclosure, that is to say in the present embodiment closer to the inlet 3 than to the outlet. 4.
  • the grid 2 is arranged along a section of the enclosure 1 across its axis D.
  • the grid is arranged to be crossed by the flow of water passing through the enclosure between the inlet 3 and the outlet. 4.
  • the grid 2 thus promotes a better homogeneity of water distribution over an entire section of the enclosure.
  • the device further comprises, in the enclosure, a filtration reagent 5, 6, 7.
  • the filtration reagent rests on grid 2.
  • the filtration reagent is placed between the grid 2 and the outlet 4, so that water to be treated enters the enclosure through the inlet 3, passes through the grid 2, the filtration reagent 5, 6, 7, then, once processed, exits the enclosure through exit 4.
  • the inlet 3 of water to be treated in the enclosure is upstream of the filtration reagent 5, 6, 7 and the outlet 4 of treated water outside the enclosure is downstream of the filtration reagent.
  • the filtration reagent comprises several layers, in particular three layers.
  • the water thus successively passes through the various layers of filtration reagent, in particular here a first layer 5, a second layer 6 and finally a third layer 7, in this order.
  • the first layer 5 of the filtration reagent is for example a prefiltration layer.
  • a prefiltration layer is for example configured to eliminate oxygen dissolved in water.
  • the second layer 6 of the filtration reagent comprises for example a mixture of iron and sand configured to reduce and accumulate mercury polluting the water to be treated.
  • the third, and here last, layer 7 of the filtration reagent is for example a post-filtration layer comprising for example activated carbon granules.
  • the thicknesses and volumes of each of the layers are for example calculated according to a necessary and/or desired residence time.
  • the percentage of iron in the iron-sand mixture is 10% by mass (the unit m/m in Table 1 means mass/mass).
  • the particle size of iron is between 80 ⁇ m and 140 ⁇ m and that of silica sand between 0 mm and 4 mm.
  • the volume load represents a ratio between the water flow in m 3 /hour and the volume of filtration reagent in m 3 .
  • Hg 0 metallic mercury
  • Hg 2+ ionic mercury
  • the mercury concentration was adjusted to 30 ⁇ g/L by adding HgCl 2 (addition of 80 ⁇ L of a 1 g/L solution of HgCl 2 ).
  • the water polluted by mercury is pumped using a peristaltic pump then passes through the 10% iron-sand mixture disposed in a 10 mL filter cartridge with a slenderness of 5.
  • the mercury is dosed at the inlet and at the output (eg by AAS - atomic absorption spectrometry - (Hg3000 analyzer, SMT)).
  • the flow rate of the peristaltic pump is set at 1 mL/min.
  • the residual concentration, at the cartridge outlet, is much lower than 1.0 ⁇ g/L.
  • the abatement is considered 100% at this concentration.
  • the maximum residual concentration measured is approximately 12.8 ⁇ g/L.
  • the abatement is therefore greater than 93.5%, for a residence time of only 10 minutes.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Removal Of Specific Substances (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Claims (13)

  1. Vorrichtung zur Behandlung von mit Quecksilber verschmutztem Wasser, Folgendes beinhaltend: Eine Einschließung (1), die ein Filterungsreagens (5, 6, 7) enthält, einen Zulauf (3) für zu behandelndes Wasser in die Einschließung (1) stromaufwärts des Filterungsreagens (5, 6, 7) gelegen, und einen Auslauf (4) für behandeltes Wasser der Einschließung (1) stromabwärts des Filterungsreagens (5, 6, 7) gelegen, wobei das Filterungsreagens (5, 6, 7) eine Mischung (6) aus Eisen und einen chemisch inerten körnigen Träger beinhaltet, wobei das Eisen aufgrund seines Reduktionsvermögens verwendet wird, und metallisches Eisen oder eine Legierung ist, die Eisen enthält, dadurch gekennzeichnet, dass das Filterungsreagens weiter mindestens ein Additiv beinhaltet, wobei das mindestens eine Additiv elementaren Schwefel beinhaltet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Verhältnis N = D15/d85, wobei D15 dem Durchgangsdurchmesser des körnigen Trägers mit 15 Ma.-% entspricht, und d85 dem Durchgangsdurchmesser des Eisens mit 85 Ma.-% entspricht, kleiner oder gleich 11 ist, vorzugsweise zwischen etwa 3 und etwa 5 liegt.
  3. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Eisen in Form von Schrot, Pulver und/oder Span, oder jeder anderen aufgesplitterten Form ist, welche das Eindringen von Wasser erlaubt.
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der chemisch inerte körnige Träger Sand und/oder Quarzkies, Kügelchen aus Kieselsäure, Glas, oder gar Kunststoffmaterialien beinhaltet.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Mischung (6) zwischen etwa 1 Ma.-% und etwa 50 Ma.-% an Eisen, vorzugsweise zwischen 1 Ma.-% und etwa 25 Ma.-%, oder gar noch bevorzugter zwischen etwa 5 Ma.-% und etwa 20 Ma.-% beinhaltet.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das mindestens eine Additiv mindestens ein spezielles Ionentauscherharz beinhaltet.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das mindestens eine Additiv Aktivkohle beinhaltet.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das mindestens eine Additiv in die Masse der Mischung aus Eisen-körnigem Träger gemischt ist.
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das mindestens eine Additiv mindestens eine unabhängige Schicht darstellt, die stromaufwärts und/oder stromabwärts der Mischung (6) aus Eisen-körnigem Träger gelegen eingelassen ist.
  10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Filterungsreagens (5, 6, 7) mehrere Schichten beinhaltet, die konfiguriert sind, um nach und nach von dem zu behandelnden Wasser durchquert zu werden.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass das Filterungsreagens (5, 6, 7) eine Vorfilterungsschicht (5) stromaufwärts von mindestens der Mischung (6) aus Eisen-körnigem Träger gelegen beinhaltet, wobei die Vorfilterungsschicht (5) eine Durchlässigkeit mindestens zehn Mal größer als jene der Mischung (6) aus Eisen-körnigem Träger, und/oder einen Eisengehalt aufweist, der zwischen etwa 20 Ma.-% und etwa 40 Ma.-% liegt.
  12. Verwendung einer Mischung (6), welche Eisen und einen chemisch inerten körnigen Träger beinhaltet, in einem Filterungsreagens, zur Behandlung von mit Quecksilber verschmutztem Wasser, wobei das Eisen aufgrund seines Reduktionsvermögens verwendet wird, und metallisches Eisen oder eine Legierung ist, die Eisen enthält, und das Filterungsreagens weiter mindestens ein Additiv beinhaltet, wobei das mindestens eine Additiv elementaren Schwefel beinhaltet.
  13. Verfahren zur Behandlung von mit Quecksilber verschmutztem Wasser durch eine Vorrichtung nach einem der Ansprüche 1 bis 11, Folgendes beinhaltend:
    - Einen Schritt zum Einbringen eines Volumens an Wasser in die Einschließung (1) der Vorrichtung durch den Wasserzulauf (3) der Vorrichtung;
    - Einen Schritt zum Durchführen des Wasservolumens in Kontakt mit dem Filterungsreagens (5, 6, 7), eine Aufenthaltsdauer kleiner oder gleich zwei Stunden lang;
    - Einen Schritt zum Ausfällen des Quecksilbers, mit dem Eisen der Mischung (6) aus Eisen-körnigem Träger des Filterungsreagens (5, 6, 7), der einen Schritt zur Reduktion des Quecksilbers und einen Schritt zum Bilden von Quecksilber-Mikrotröpfchen beinhaltet;
    - Einen Schritt zum Bilden von Quecksilbersulfid (HgS) durch Reaktion des reduzierten Quecksilbers und des elementaren Schwefels; und
    - Einen Schritt zum Extrahieren des Wasservolumens aus der Vorrichtung durch den Wasserauslauf (4) der Vorrichtung.
EP17821987.9A 2016-12-13 2017-12-13 Mischung zur behandlung von mit quecksilber verschmutztem wasser, vorrichtung zur behandlung von mit quecksilber verschmutztem wasser mit solch einer mischung und verfahren zur behandlung von mit quecksilber verschmutztem wasser mittels solch einer vorrichtung Active EP3555004B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1662354A FR3059996B1 (fr) 2016-12-13 2016-12-13 Melange de traitement d'eau polluee au mercure, dispositif de traitement d'eau polluee au mercure utilisant un tel melange et procede de traitement d'eau polluee au mercure au moyen d'un tel dispositif
PCT/FR2017/053543 WO2018109378A1 (fr) 2016-12-13 2017-12-13 Mélange de traitement d'eau polluée au mercure, dispositif de traitement d'eau polluée au mercure utilisant un tel mélange et procédé de traitement d'eau polluée au mercure au moyen d'un tel dispositif

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EP3555004A1 EP3555004A1 (de) 2019-10-23
EP3555004B1 true EP3555004B1 (de) 2023-06-28

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US20110309021A1 (en) * 2010-06-22 2011-12-22 Yan Jin Mitigation of irrigation water using zero-valent iron treatment

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DE2122415A1 (de) 1971-05-06 1972-11-16 Gockel, Hans, 7000 Stuttgart-Feuerbach Verfahren zum Entgiften, Klären und Wiedergewinnen von Metallsalzen aus Abwässern und Restkonzentraten durch Reduktion bis zu den Metallen mittels Hydrosulfit konz. (Natriumdithionit) oder Hydrazin bei gleichzeitiger Anwendung eines Impfstoffes und Sedimentationsbeschleunigers zur Verkürzung der Ausfällzeit und Reduzierung des Schlammvolumens
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WO2018109378A1 (fr) 2018-06-21
FR3059996B1 (fr) 2020-03-20
PL3555004T3 (pl) 2024-09-02
HUE065756T2 (hu) 2024-06-28
EP3555004A1 (de) 2019-10-23
ES2957697T3 (es) 2024-01-24
MA48598A (fr) 2020-03-18
FR3059996A1 (fr) 2018-06-15

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